2. verb. To become mechanically inoperable beyond the point of repair. See also, fucked, fubar.

entymology and usage: "shit the bed" comes from the unfortunate final humiliation when an animal's (yes, including human's) bowels completely relax at the point of death, causing the contents of the colon to be expelled. To use the term as a "euphamism" for biological death is considered to be in poor taste. It is more often colorfully used in definition 2.

1. That asshole Mr Jones never had a good word to say to anyone. At his funeral, the few attendees were secretly glad that he had shit the bed.

2. I was hoping that my car could be repaired, but the mechanic told me that it had shit the bed so I had it scrapped.

to embarrass oneself privately or solely in the company of close family/friends. This term is so named because defecating on one's bed is truly embarrassing but only for those who are witness to such an event, which is usually limited to the individual who shitted the bed or a few additional people. Either way, the embarrassment can be contained to a manageable degree.

Jeff: "Dude, I totally shit the bed last night"
Mike: "What did you do?"
Jeff: "Fell down the stairs while my family was watching TV"
Mike: "That's not bad, at least you didn't shit the pool"